JPS60129000A - Motor blower - Google Patents

Motor blower

Info

Publication number
JPS60129000A
JPS60129000A JP23666983A JP23666983A JPS60129000A JP S60129000 A JPS60129000 A JP S60129000A JP 23666983 A JP23666983 A JP 23666983A JP 23666983 A JP23666983 A JP 23666983A JP S60129000 A JPS60129000 A JP S60129000A
Authority
JP
Japan
Prior art keywords
air guide
volute casing
impeller
sectional area
volute chamber
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP23666983A
Other languages
Japanese (ja)
Inventor
Mikio Yamaoka
山岡 三喜男
Kunihito Mori
森 国人
Masami Fukumoto
正美 福本
Izumi Yamaura
泉 山浦
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP23666983A priority Critical patent/JPS60129000A/en
Publication of JPS60129000A publication Critical patent/JPS60129000A/en
Pending legal-status Critical Current

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  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

PURPOSE:To smoothly decelerate an air flow in a motor blower by inclining the bottom of a volute casing in such a manner that the air guide center side thereof is high while the opposite side thereof is low together with increasing the sectional area of the volute casing, from the front end to the rear end of a tongue. CONSTITUTION:An air guide 6, in which a volute casing 5 is formed at outer periphery of an impeller 4, is provided. A blower is constituted in such a manner that, from the front end 9a of a tongue of the air guide 6 to the rear end 9b, the bottom surface 10 of the volute casing 5 is inclined so that to the center side of the air guide 6 is high and the opposite side is low to obtain a inclined surface and the volute casing 5 extends downward as it goes outward, gradually increasing its sectional area. With this contrivance, since the sectional are of the volute casing 5 increases gradually in order to unify the variation in area, an airflow from the impeller 4 can smoothly be decelerated. As a result, loss caused by air collision or the like can be reduced, thereby enhancing the fan efficiency.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は電気掃除機に組込んで使用する電動送風機に関
するものである。
DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an electric blower that is incorporated into a vacuum cleaner.

従来例の構成とその問題点 従来から知られている電動送風機をより小型化するため
にインペラおよびエアガイド等の構成に種々の工夫がこ
らされている。第1図、第2図に示1.た常動送風機I
ll藺lけその例であり、以下構成を説明する。1はほ
ぼ円錐状のロータで、そのハブ面にモータ軸2と平行で
、かつラジアル方向に多数配列して1体にブレード3を
設けており、これらによりインペラ4が構成されている
Conventional Structures and Problems Various improvements have been made to the structures of impellers, air guides, etc. in order to make conventional electric blowers more compact. 1. Shown in Figures 1 and 2. Permanent blower I
This is just an example, and the configuration will be explained below. Reference numeral 1 denotes a substantially conical rotor, and a large number of blades 3 are provided on the hub surface of the rotor in parallel with the motor shaft 2 and arranged in the radial direction, and an impeller 4 is constituted by these blades.

6はインペラ4の外周に多数の独立したボリュート室5
を形成したエアガイドである。ボリュート室6はインペ
ラ4とエアガイド6とを覆ったファンケーシング7がモ
ータ8のプラケットに固着されて形成されている。
6 is a large number of independent volute chambers 5 on the outer periphery of the impeller 4.
This is an air guide with a The volute chamber 6 is formed by a fan casing 7 that covers the impeller 4 and the air guide 6 and is fixed to a placket of the motor 8.

さて、前記のボリュート室5は、エアガイド6の外周に
多数設けたトング9が先端9aから終端9bにかけて順
次高さを低くして放射状に延びて計り、終端9bの曲面
がファンケーシング7に接するようになっている。ポリ
ュート室6の通路底面10は、トング9の先端9aから
終端9bまでの間、トング9に対して直角で、旦つ外方
に向って傾斜して構成されている(第3図A、B参照)
Now, in the volute chamber 5, a large number of tongues 9 provided on the outer periphery of the air guide 6 extend radially from the tip 9a to the terminal end 9b, gradually decreasing in height, and the curved surface of the terminal end 9b contacts the fan casing 7. It looks like this. The passage bottom surface 10 of the porlute chamber 6 is configured to be perpendicular to the tongs 9 from the tip 9a to the terminal end 9b of the tongs 9, and to be inclined outward once (Figs. 3A and 3B). reference)
.

そしてそのトング9の終端9bから戻り通路用の案内羽
根11が連結されて、インペラ4の回転で発生した気流
を減速昇圧させている。
A return passage guide vane 11 is connected to the terminal end 9b of the tongue 9 to decelerate and increase the pressure of the airflow generated by the rotation of the impeller 4.

しかし上記のように構成された電動送風機においては、
インペラ4で発生した容気流をトング9の先端9aから
ボリュート室5に入るに従い徐々に減速させることが望
ましいが、ボリュート室5の底面1oはトング9に対し
て直角で、旦つ外方に向って傾斜し、さらにトング9の
高さが変化しているため、断面積が順次拡大される状態
ではなく、望ましい減速昇圧が得られずファン効率が今
一つである。
However, in the electric blower configured as above,
It is desirable to gradually decelerate the airflow generated by the impeller 4 as it enters the volute chamber 5 from the tip 9a of the tongs 9. Since the tongue 9 is tilted and the height of the tongue 9 is changing, the cross-sectional area is not gradually expanded, and the desired deceleration and pressure increase cannot be obtained, resulting in poor fan efficiency.

発明の目的 本発明は上記の点に着目したもので、ファン効率を向上
させた電動送風機を提供するものである。
OBJECTS OF THE INVENTION The present invention focuses on the above points, and provides an electric blower with improved fan efficiency.

発明の構成 本発明の電動送風機は、ボリュート室の底面をエアガイ
ドの中心側を高く、反対側を低くして傾斜させ、トング
先端から終端にわたって順次ボリュート室の断面積を拡
大させたもので、ボリュート室に流入した空気流をスム
ーズに減速させたものである。
Structure of the Invention In the electric blower of the present invention, the bottom surface of the volute chamber is inclined so that the center side of the air guide is higher and the opposite side is lower, and the cross-sectional area of the volute chamber is gradually expanded from the tip of the tongs to the end. The airflow flowing into the volute chamber is smoothly decelerated.

実施例の説明 以下、本発明の一実施例を第4図〜第8図によって説明
する。第1図〜第3図と同一部分には同−符号術して説
明を省略する。ポリュート室5は、トング9の先端9a
から終端9bに亘るが、その間のボリュート室6の底面
1oはエアガイド6の中心側を高く反対側を低くして傾
斜させて傾斜面とし、外方にゆくにつれて下方に延び断
面積が順次拡大するように構成されている。すなわち、
ボリュート室5の断面積は、外方にゆくにつれて一定の
割合で拡大されているものである。
DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 4 to 8. Components that are the same as those in FIGS. 1 to 3 will be given the same reference numerals and their explanation will be omitted. The porlute chamber 5 is located at the tip 9a of the tongs 9.
The bottom surface 1o of the volute chamber 6 between the air guide 6 and the bottom surface 1o is inclined so that the center side of the air guide 6 is high and the opposite side is low, and as it goes outward, it extends downward and the cross-sectional area gradually increases. is configured to do so. That is,
The cross-sectional area of the volute chamber 5 increases at a constant rate as it goes outward.

そして、多数のボリュート室5が構成されたエアガイド
6は、ファンケーシング7により覆われている。
The air guide 6 including a large number of volute chambers 5 is covered by a fan casing 7.

上記構成において、インペラ4より吐出される空気流は
、図中矢印のようにポリュート室6の中へ入るが、断面
積が順次拡大されているので面積変化が均等になり、気
流の減速をスムーズにおこなうことができると共に、ト
ング9の終端9bはファンケーシング7の曲線に沿って
気流が案内羽根11の戻り通路に入り1.減速昇圧がで
きる。したがって、衝突等による損失が少なく、ファン
効率は第1図、第2図のものに比べて2%も向上させる
ことができた。
In the above configuration, the airflow discharged from the impeller 4 enters the porlute chamber 6 as shown by the arrow in the figure, but since the cross-sectional area is gradually enlarged, the change in area becomes uniform, and the deceleration of the airflow is smoothed. At the same time, the terminal end 9b of the tongue 9 allows the airflow to flow along the curve of the fan casing 7 into the return passage of the guide vane 11. Can be decelerated and boosted. Therefore, there is less loss due to collisions, etc., and fan efficiency can be improved by 2% compared to those shown in FIGS. 1 and 2.

発明の効果 本発明の電動送風機は、ボリュート室の底面を傾斜させ
てポリュート室の断面積を順次拡大させたことにより、
ボリュート室に流入した空気流をスムーズに減速昇圧す
ることができ、ファン効率を高めることができたもので
ある。
Effects of the Invention The electric blower of the present invention gradually expands the cross-sectional area of the volute chamber by inclining the bottom surface of the volute chamber.
The air flow flowing into the volute chamber can be smoothly decelerated and pressurized, increasing fan efficiency.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は電動送風機の説明用要部欠截断面図、第2図は
同電動送風機のエアガイドを部分的に示した上面図、第
3図Aは第2図の1−1断面図、第3図Bは同■−■断
面図、第4図は本発明の一実施例を示す電動送風機のエ
アガイドを部分的に示した上面図、第6図は同電動送風
機のエアガイドとインペラの組合せ状態の上面図、第6
図は同エアガイドの下面図、第7図は同エアガイドの部
分側面図、第8図は第7図の■−■断面図である。
Fig. 1 is a cutaway sectional view of the main parts of the electric blower, Fig. 2 is a top view partially showing the air guide of the electric blower, Fig. 3A is a 1-1 sectional view of Fig. 2, Fig. 3B is a sectional view taken along the line ■-■, Fig. 4 is a top view partially showing the air guide of an electric blower showing an embodiment of the present invention, and Fig. 6 is an air guide and impeller of the electric blower. 6th top view of the combined state of
The figure is a bottom view of the air guide, FIG. 7 is a partial side view of the air guide, and FIG. 8 is a cross-sectional view taken along the line -■ in FIG. 7.

Claims (1)

【特許請求の範囲】[Claims] − インペラの外周に多数のトングを放射状に設けてボ
リュート室を形成したエアガイドと、前記インペラとエ
アガイドを覆ったファンケーシングとを備え、前記ボリ
ュート室は、その底面をエアガイドの中心側を高く、隊
対側を低くして傾斜させ、トング先端から終端にねたっ
て順次ボリュート室の断面積を拡大させた電動送風機。
- An air guide in which a large number of tongues are arranged radially around the outer periphery of an impeller to form a volute chamber, and a fan casing that covers the impeller and the air guide, the volute chamber having its bottom facing toward the center of the air guide. This is an electric blower that is tall and tilted with the opposite side lowered, and the cross-sectional area of the volute chamber is gradually expanded from the tip of the tongs to the end.
JP23666983A 1983-12-15 1983-12-15 Motor blower Pending JPS60129000A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP23666983A JPS60129000A (en) 1983-12-15 1983-12-15 Motor blower

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP23666983A JPS60129000A (en) 1983-12-15 1983-12-15 Motor blower

Publications (1)

Publication Number Publication Date
JPS60129000A true JPS60129000A (en) 1985-07-10

Family

ID=17004027

Family Applications (1)

Application Number Title Priority Date Filing Date
JP23666983A Pending JPS60129000A (en) 1983-12-15 1983-12-15 Motor blower

Country Status (1)

Country Link
JP (1) JPS60129000A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6634856B2 (en) * 2000-09-05 2003-10-21 Industrial Technology Research Insitute Integrally formed stamped sheet-metal blades having 3D structure
WO2010126383A1 (en) * 2009-04-29 2010-11-04 Fisher & Paykel Healthcare Limited A fan unit with improved surge characteristics

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6634856B2 (en) * 2000-09-05 2003-10-21 Industrial Technology Research Insitute Integrally formed stamped sheet-metal blades having 3D structure
WO2010126383A1 (en) * 2009-04-29 2010-11-04 Fisher & Paykel Healthcare Limited A fan unit with improved surge characteristics
US9387298B2 (en) 2009-04-29 2016-07-12 Fisher & Paykel Healthcare Limited Fan unit with improved surge characteristics
US10898663B2 (en) 2009-04-29 2021-01-26 Fisher & Paykel Healthcare Limited Fan unit with improved surge characteristics
US11623056B2 (en) 2009-04-29 2023-04-11 Fisher & Paykel Healthcare Limited Fan unit with improved surge characteristics

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